总字数：15000+
摘 要
伴随着当前科学技术的不断发展，汽车作为人们出行的主要方式之一，而当前车内儿童滞留导致意外发生的次数越来越多，此次设计为了解决儿童滞留车内的问题进行设计。该系统采用STC89C52单片机作为此次设计的主控芯片，采用HX711检测到驾驶位的重量，通过DS18B20检测当前车内的温度，通过SGP30检测当前车内的CO2浓度，采用人体热释电检测当前车内是否有人，当检测到驾驶员离开，锁车按键完成锁车时，检测到车内有人，当检测到温度或者CO2浓度大于设置的最大值进行声光报警，并自动打开开窗，通过GSM模块发送短信给驾驶员，用户在使用时，可以通过按键设置CO2和温度的最大值，并将检测都的信息通过LCD1602液晶显示屏进行显示。此次设计的车内环境监测，可以解决当车内有小孩时CO2浓度过高中毒或者温度过高给孩子带来的问题，所以此次设计具有一定的研究价值和实际意义，也可以体现使得当前生活产品更加的智能化和人性化。
关键词：儿童滞留；CO2检测模块；温度检测模块；人体热释电检测模块；GSM
ABSTRACT
With the continuous development of current science and technology, cars are one of the main ways for people to travel, and the number of accidents caused by children staying in the car is increasing. This design is designed to solve the problem of children staying in the car. The system uses STC89C52 microcontroller as the main control chip of this design, uses HX711 to detect the weight of the driver’s seat, uses DS18B20 to detect the temperature of the current car, uses SGP30 to detect the CO2 concentration in the car, uses human pyroelectricity to detect whether there is a person in the car, when the driver leaves, When the temperature or CO2 concentration is greater than the set maximum value, sound and light alarm will be given, and the window will be opened automatically. SMS will be sent to the driver through GSM module. When using the car, the user can set the maximum value of CO2 and temperature by pressing the key. And will detect the information through the LCD1602 LCD screen display. The design of the car environment monitoring, can solve when there are children in the car CO2 concentration is too high poisoning or temperature is too high to bring children problems, so the design has a certain research value and practical significance, can also reflect the current life products more intelligent and humanized.
KEY WORDS:Detention of children; CO2 detection module; Temperature detection module; Human pyroelectric detection module; GSM
目 录
1 引言
2 系统设计方案
3 硬件设计
4 系统程序设计
5 仿真测试
6 实物制作与调试过程
结论
致谢
参考文献
附录
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